66454760

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{6619}}^1$

素因数の和:6881

約数の個数: 32

約数和(自身を含む): 150141600

約数和(自身を除く): 83686840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 6619, 10040, 13238, 26476, 33095, 52952, 66190, 132380, 264760, 1661369, 3322738, 6645476, 8306845, 13290952, 16613690, 33227380, 66454760]

約数ペア:

[(1, 66454760), (2, 33227380), (4, 16613690), (5, 13290952), (8, 8306845), (10, 6645476), (20, 3322738), (40, 1661369), (251, 264760), (502, 132380), (1004, 66190), (1255, 52952), (2008, 33095), (2510, 26476), (5020, 13238), (6619, 10040)]